Finding the Fourth Proportional to 261,236.63, 391,859.80 and 74,252.99
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Solution
The fourth proportional to 261,236.63, 391,859.80 and 74,252.99 is: 111,380.86
Step by Step Solution
- Step 1: Write the proportion equation
261,236.63 : 391,859.80 = 74,252.99 : x - Step 2: Convert to fraction form
261,236.63/391,859.80 = 74,252.99/x - Step 3: Cross multiply
261,236.63x = 391,859.80 × 74,252.99 - Step 4: Simplify right side
261,236.63x = 29,096,759,805.09 - Step 5: Solve for x
x = 29,096,759,805.09/261,236.63 - Step 6: Final answer
x = 111,380.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.